SPV-SHEC-BES Based Charging Infrastructure

With the enhancement in the demand as well as number of the electric vehicles (EV) worldwide there is a need for the development of the charging infrastructure for the smooth operation of the EV’s. This work deals with the integration of charging infrastructure to a 3P4W photovoltaic (PV)-small hydro energy conversion (SHEC)-battery energy storage (BES) based microgrid to provide power to the local loads, as well as incorporating AC and DC charging. The generated PV power is utilized locally to increase the self-consumption rate whereas the constant power generated from the SHEC is used to feed AC loads and EV’s connected at the common point in conjunction with the utility grid. Besides, the system provides dual mode operation i.e standalone as well as grid tied mode and operates seamlessly between both the modes. The controller scheme implemented suppresses the high neutral current due to the uneven distribution of the single phase loads besides, providing other functions such as improving the power quality performance of the grid, undisrupted power to the loads, mitigation of harmonics and reactive power compensation. The system is simulated and the results are presented under various scenarios.